Nozzle and adjustable spray deflector



Nov. 29, 1949 L. E. BOUDREAUX ET AL 2, 8 52 NOZZLE AND ADJUSTABLE SPRAYDEFLECTOR Filed July 4, 1945 E E n c B biog/d E Equ dream llz'llz'amZ).- Fore INVENTORS AGENT Patented Nov. 29, 1949 h i 2 *2 o'clr'nut"engagingfthe"sdrface' oi the deflecting dy most remote fromf-the'tube opening. The

ilec'ti'ng they is adjustable oh the threaded stem 1 Thisinvhtlonrelatesto a unique spray device and "morepart'icularly to a 'device' adapted--ior '-o fluids whichareoontarninatedby ch"asscale, slirnefdirt andthel-ike. t fright-angle tothe-open endofthe' tubto In 'ce'rt'ain"communities and in certain" indus rottleand sprayfluid "issuingtherefrom. I trialoperations watercontaining considerable In Figure 1=,t e-stem shpptrt i'swvel'dedto the mount of' dirtand*scale""is-oftenemployed for in side ofthe tube irrafl horizontal position being repro'tectivepurposesand similar instances in 'befntat' arightanglesofthat'the vertical portion hi'cli-a sfifistantially purewaterneed not-neces- I ofthestem issubstantiallyin the center of and sa i1praying such water; it'has"" 16 cdaxial with the' t'ube. The stemis'atta'chedto *been found that la-r particles oi scale and'other'theinside"offth' tube atf such apoint that" a 'atter containd' t-ereinfwou1d rapidly clog-the 'sti'eam-of liquid'passing throdgh thetube which penings of conventional *spray deflctedby theliorizontalportion-of the stem nozzles giving ise to' 'an iineven-stream of water'ill be reuiiited beforit-passes from the nozzle or in s the pletelystopping the ilowl m' ening.f The vrtial section'of thestemfbeing thusrenderingthe nzzle" totally ineliective for "ififtht center ofthetubefper'r'riitswater flowing its intended use. '-therethrough'tobe'dischargedin aiihifo'rm man- Spraying devices equipped with revolvingparts rier? tikin'gthe e'fiectihg'body to p'roduce Biotint-likewiseprove to-be of little valuein-the spraying tiniiousfuiiifoi'nrsheet 'ofwaten of fluids containing impurities of :iairly large n Figure2,thfsteni'e1ipport is-ivelded-to the particle sizeor those of a slimy orsticky nature tsideloftl'fe tubi thh*threade'dektreinity'of the whichtndto biiildii'p a deposit ofioreign mat- 'er'ii engaging the lock n u'tand th'e axial threaded ter=in--the nozzle tube orin therevolving-sections bore of the deflectingj-bodjf andextending for araduallytclosing the openingsor grooves of the sl'i rtdi'stariceuii'inthtnd-bmtn oft'he' tube. revolving portion and stopping-the flowoili'quidi inbodiment'of-theinventionshownin Figimportant object i ofthe present invention eing*more-'coinpadt" is generally to be pre'cco'rdingly is the provision-bra non-plugging rr ed f rspraying-watencontainingsolidpartipray" device through whicha-steadyst-reamf'of clesf-'of--'seal for other-impurities. "lioweverpforater cam-pass uninterrupted'byimpurities con r the discharge of"water'ohtaini'ng sticky orslir'ny "'nd irr-the liquid. A'furtherobject'is thepro- I tter then zzl'e shown' iri l igiire LZ-is-t'o preis'ion inadeviceof thistype ofan adjustable deafer'r his deyice' there is less surface"of ectihg-bbdy so that water beingl'discharged fromstarred'ptrtexhoseauh'the interior of the tube the no'zzleis' spreadinto a=uniform sheet. Es'till to which the slimy material may adhere andcon- -further object is the provision of' an inexpensive ""''q11ent1ylsiiklihobd (if tlfi flow ofdiquiddssunozzle which can readily bedismantled for purng from the tube to be diminished.

poses of repair, cleaning and the like. Another c r d disc deflector,comp s a circular object is the provision of a spray nozzle free of dischavlng a concave Surface adjacent o t e revolving parts. open end of thetube and surrounding the These and other objects which will occur tothreaded stem s t p s a Wide openin those skilled in the art areattained by the device 40 between e end of the pipe d e deflector. shownin the accompanying drawings wherein: thus allowing passage of a greaterVolume of Wa- Figure 1 is a vertical partial section view of the lie!and larger pa t cles of scale and the like with pray ngzzle having acurved disc deflecting bcdy. retention of the advantage of distributingwater Figure 2 is a vertical partial section view of a uniformly over aWide area. In either ins ance, modified form of the nozzle having acurved disc the deflecting y is able o be adjusted to give deflectingbody. a fine spray of liquid or as will usually be the case Referringmore particularly to the drawings, using water containing a considerablequantity numeral l designates a circular tube of uniform of impuritiesthe body will be adjusted to a deinternal diameter open at one end forspray dissired fixed position, the size of the opening being charge of afluid. A threaded stem, either 2 or governed by the particle size of theimpurities 3 is mounted coaxially with said tube in the open containedin the water. In this way, large pieces end thereof. A curved discdeflecting body 5 has of scale and the like pass through the opening ofan axial threaded bore which engages the threads the nozzle along withthe sprayed sheet of water. of said stem and is held in a fixedadjustable po- Thus, plugging or clogging of the nozzle is presltion bya lock nut 4 on the threaded stem, the vented to give a smooth flow ofliquid.

If it is desired to adjust the position of the defleeting body to give afiner spray, it is only necessary to screw the body inward on thethreaded stem support to the desired point and then to bring the locknut against it holding the body in a firm, fixed position. If theadjustment of the body is to outward giving a heavier spray of Water, itis first necessary to release the lock nut on the threaded stem supportto the desired opening of the tube was smaller in diameter than the tubeitself. The nozzle of the present invention has a distinct advantageover such tapered nozzles where a liquid is to be sprayed containingcontaminating bodies of fairly large particle size. With a taperednozzle or those having an opening of smaller diameter than that of thetube itself, the water stream containing scale, slime, and the likeissuing forth under a heavy pressure is choked back into the interior ofthe tube as it strikes a deflecting body such as that shown in thedrawings. While a portion of the contaminating bodies thus choked backis removed by the oncoming stream of water some of such material,particularly sticky or scaly matter, remains in the interior of thetube. This accumulation of foreign matter rapidly builds up in taperednozzles resulting in early clogging of the opening with impuritiescarried in the water. In the nozzle of the present invention any scale,slime, dirt or other impurities contained in the water upon entering thetube of the nozzle passes through without clogging.

The spray device of this invention will usually be constructed of metalsuch as brass, iron, steel, etc. The various steels includingacid-resistant steel, stainless steel and steels plated with metals,such as chromium and the like, may be employed under certain conditionswarranting their use. In certain operations it may be desirable toconstruct the nozzle of a transparent substance, in which case glass orparticular plastics may be used.

However, the nozzle herein described is primarily intended to be usedfor spraying water in the combat of fires and is particularly adaptedfor installation in industrial plants, manufacturing or usingcombustible or volatile substances. Under such conditions, it isconvenient to use a number of spray nozzles spaced at intervalsthroughout the area to be protected, the upper extremities of the nozzletubes being connected to a common pipe line.

In the installation of spray nozzles for fire protective purposes, it isparticularly important to employ a nozzle which will not become readilyclogged or plugged upon use. The nozzle of the present invention uponuse over an extended period of time for spraying water containing afairly large quantity of foreign matter has been found to function in asuitable and eflicient manner.

We claim:

A non-plugging spray device comprising a tube of uniform internaldiameter open at one end for spray discharge of a fluid; a U-shapedstem, one leg thereof secured to the exterior of said tube, the otherleg being threaded and extending into and axially Within the said tube;a disc-like defiector of greater diameter than said tube having athreaded axial bore and being adjustably mounted on the threaded leg ofsaid stem; said deflector having its face adjacent the end of the tubeformed with an annular groove extending in a plane parallel to the openend of the tube and extending over an area of the face from immediatelyadjacent the stem to an annular edge beyond the area of the opening inthe tube.

LLOYD E. BOUDREAUX. WILLIAM L. FORE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 151,227 Jenks May 26, 1874571,048 Ledden Nov. 10, 1896 981,081 Hammond Jan. 10, 1911 1,130,561Amiss Mar. 2, 915 1,271,939 Reeves July 9, 1918 1,427,822 Kennedy et a1;Sept. 5, 1922 1,439,176 Loepsinger Dec. 19, 1922 1,549,861 Fogh Aug. 18,1925 1,575,895 Baker Mar. 9, 1926 1,713,260 Chandler May 14, 19292,335,161 Sebald Nov. 23, 1943

